MAX15462

PRODUCTION

42V, 300mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converters

Industry’s Smallest High-Voltage Synchronous Buck Regulator

Data Sheet (Rev. 2) Product Selection Table
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Overview

  • Eliminates External Components and Reduces Total Cost
    • No Schottky—Synchronous Operation for High Efficiency and Reduced Cost
    • Internal Compensation
    • Internal Feedback Divider for Fixed 3.3V, 5V Output Voltages
    • Internal Soft-Start
    • All-Ceramic Capacitors, Ultra-Compact Layout
  • Reduces Number of DC-DC Regulators to Stock
    • Wide 4.5V to 42V Input Voltage Range
    • Fixed 3.3V and 5V Output Voltage Options
    • Adjustable 0.9V to 0.89 x VIN Output Voltage Option
    • Delivers Up to 300mA Load Current
    • Configurable Between PFM and Forced-PWM Modes
  • Reduces Power Dissipation
    • Peak Efficiency = 92%
    • PFM Feature for High Light-Load Efficiency
    • Shutdown Current = 2.2µA (typ)
  • Operates Reliably in Adverse Industrial Environments
    • Hiccup-Mode Current Limit and Autoretry Startup
    • Built-In Output Voltage Monitoring with Open-Drain Active-Low RESET Pin
    • Programmable EN/UVLO Threshold
    • Monotonic Startup into Prebiased Output
    • Overtemperature Protection
    • High Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range
MAX15462
42V, 300mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converters
MAX15462: Block Diagram
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Documentation

Data Sheet 1

Technical Articles 1

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Switching Regulators & Controllers 2
MAX15062
PRODUCTION 60V, 300mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converters
MAX17532
PRODUCTION 42V, 100mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter with 22µA No-Load Supply Current
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Tools & Simulations

ADI Power Studio™ Designer

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SIMPLIS Models 1

Evaluation Kits

MAX15462AEVKIT

Evaluation Kit for MAX15462

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Features and Benefits

  • 4.5V to 42V Input Voltage Range
  • 3.3V Output, 300mA Continuous Current
  • Internal Compensation
  • EN/UVLO for On/Off Control and Programmable Input Undervoltage Lockout
  • 90% Peak Efficiency
  • 500kHz Fixed-Frequency PWM Operation
  • PFM or Forced-PWM Mode of Operation
  • Hiccup Mode Overcurrent Protection
  • Open-Drain Active-Low RESET Output
  • Thermal Shutdown
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX15462A evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the performance of the MAX15462A 42V, 300mA ultra-small, high- efficiency, synchronous step-down converter. The EV kit operates over a wide 4.5V to 42V input voltage range, and provides up to 300mA at the preset 3.3V output. The device features undervoltage-lockout, overcurrent protection, and thermal shutdown. The EV kit switches at a fixed frequency of 500kHz, and delivers a peak efficiency of 90% with the supplied components.

The EV kit comes installed with the MAX15462AATA+ in an 8-pin (2mm x 2mm) lead(Pb)-free/RoHS-compliant TDFN package.

Applications

  • 4–20mA Current Loops
  • General-Purpose Point of Load
  • High-Voltage LDO Replacement
  • HVAC and Building Control
  • Industrial Sensors
  • Process Control

MAXM15462EVKIT

Evaluation Kit for the MAXM15462 3.3V Output-Voltage Application

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Features and Benefits

  • Highly Integrated Solution
  • Wide 4.5V to 42V Input Range
  • Programmed 3.3V Output, Delivers Up To 300mA Output Current
  • High 80.5% Efficiency (VIN = 24V, VOUT = 3.3V at 150mA)
  • 500kHz Switching Frequency
  • ENABLE/UVLO Input, Resistor-Programmable UVLO Threshold
  • PFM Feature for Better Light-Load Efficiency
  • Fixed Internal 4.1ms Soft-Start Time
  • Active-Low RESET Output, with Pullup Resistor to VCC
  • Overcurrent and Overtemperature Protection (OCP and OTP)
  • Low-Profile, Surface-Mount Components
  • Proven PCB Layout
  • Fully Assembled and Tested
  • Complies with CISPR22(EN55022) Class B Conducted and Radiated Emissions

Product Details

The MAXM15462 3.3V output evaluation kit (EV kit) provides a proven design to evaluate the MAXM15462 high-voltage, high-efficiency, synchronous step-down DC-DC module. The EV kit is programmed to deliver 3.3V output for loads up to 300mA. The EV kit features an adjustable input undervoltage lockout, selectable mode, and open-drain active-low RESET signal. The MAXM15462 data sheet provides a complete description of the module that should be read in conjunction with this EV kit data sheet prior to modifying the demo circuit. For full module features, benefits and parameters, refer to the MAXM15462 data sheet.

Applications

  • 4-20mA Current-Loop Powered Sensors
  • Battery-Powered Equipment
  • General Purpose Point-of-Load
  • HVAC and Building Control
  • Industrial Sensors and Process Control
  • LDO Replacement

MAX15462C12EVKIT

Evaluation Kit for MAX15462

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Features and Benefits

  • 14V to 42V Input Voltage Range
  • 12V Output, 300mA Continuous Current
  • Internal Compensation
  • EN/UVLO for On/Off Control and Programmable Input Undervoltage Lockout
  • 95% Peak Efficiency
  • 500kHz Switching Frequency
  • PFM or Forced-PWM Mode of Operation
  • Hiccup Mode Overcurrent Protection
  • Open-Drain Active-Low RESET Output
  • Thermal Shutdown
  • Lead-Free, 8-Pin, 2mm x 2mm TDFN Package
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX15462C 12V evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the performance of the MAX15462C 42V, 300mA ultra-small, high-efficiency, synchronous step-down converter. The EV kit operates over a wide input voltage range of 14V to 42V, and provides up to 300mA load current at 12V output voltage. The device features undervoltage lockout, overcurrent protection, and thermal shutdown. The EV kit switches at a frequency of 500kHz, and delivers a peak efficiency of 95% with the supplied components.

The EV kit comes installed with the MAX15462CATA+ in an 8-pin (2mm x 2mm) lead(Pb)-free/RoHS-compliant TDFN package.

Applications

  • 4–20mA Current Loops
  • General-Purpose Point of Load
  • High-Voltage LDO Replacement
  • HVAC and Building Control
  • Industrial Sensors
  • Process Control

MAX15462BEVKIT

Evaluation Kit for MAX15462

Buy Now View Details

Features and Benefits

  • 6.5V to 42V Input Voltage Range
  • 5V Output, 300mA Continuous Current
  • Internal Compensation
  • EN/UVLO for On/Off Control and Programmable Input Undervoltage Lockout
  • 92% Peak Efficiency
  • 500kHz Fixed-Frequency PWM Operation
  • PFM or Forced-PWM Mode of Operation
  • Hiccup Mode Overcurrent Protection
  • Open-Drain Active-Low RESET Output
  • Thermal Shutdown
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The MAX15462B evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the performance of the MAX15462B 42V, 300mA ultra-small, high-efficiency, synchronous step-down converter. The EV kit operates over a wide 6.5V to 42V input voltage range, and provides up to 300mA at the preset 5V output. The device features undervoltage lockout, overcurrent protection, and thermal shutdown. The EV kit switches at a fixed frequency of 500kHz, and delivers a peak efficiency of 92% with the supplied components.

The EV kit comes installed with the MAX15462BATA+ in an 8-pin (2mm x 2mm) lead(Pb)-free/RoHS-compliant TDFN package.

Applications

  • 4–20mA Current Loops
  • General-Purpose Point of Load
  • High-Voltage LDO Replacement
  • HVAC and Building Control
  • Industrial Sensors
  • Process Control
MAX15462AEVKIT
Evaluation Kit for MAX15462
MAXM15462EVKIT
Evaluation Kit for the MAXM15462 3.3V Output-Voltage Application
MAX15462C12EVKIT
Evaluation Kit for MAX15462
MAX15462BEVKIT
Evaluation Kit for MAX15462

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